| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
| Presentation Title |
L-2: Grain-scale Multiaxial Deformation in Multicomponent Alloys |
| Author(s) |
Yaozhong Zhang |
| On-Site Speaker (Planned) |
Yaozhong Zhang |
| Abstract Scope |
Multicomponent alloys (MCAs) demonstrate extraordinary mechanical properties including high strength and ductility synergy and excellent mechanical performance in extreme environments. However, much of our understanding on the mechanical properties of the MCAs is limited to uniaxial loading conditions at macro-scale. Therefore, exploring the mesoscale responses of the MCAs under complex multiaxial loading and connecting them to the macroscale response is of great importance. We present results from mesoscale analysis of MCAs under multiaxial loading using in-situ high energy diffraction microscopy (HEDM) to capture the evolution of grain-resolved stress states and reorientation with plastic straining. Single-phase, equiatomic CoCrNi solid-bar polycrystalline samples were fabricated and evaluated as representative MCAs under: (i) pure torsion, and (ii) axial-torsional loading up to approximately 0.4% effective strain. Additionally, preliminary experimental results were used to instantiate a novel crystal plasticity finite element (CPFE) model for verification of experimental grain-level response. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, High-Entropy Alloys, Modeling and Simulation |